Speed-regulator for explosive-engines.



PATENTED JAN. 3, 1905.

^ 2 SHEETS-SHEET l.

A. BOUGAULT. SPEED REGULATOR EUR EXPLOSIVE ENGINES.

APPLICATION FILED SEPT. 21. ,1903.

PATENTED JAN. 3, 1905. A. BOUGAULT. SPEED REGULATOR FOR'EXPLOSIVE ENGINES.

APPLIOATION FILED SEPT. 21. 1903.

UNITED STATES Iatented. January 3, 1905.

PATENT CEEICE.

ALFRED BCUGAULT, OF PARIS, FRANCE, ASSIGNOR TO THE SOCIETE FRANCAISE DE CONSTRUCTIONS MECANIQUES, (ANCIENS ETABLISSE- MENTS CAIL,) OF PARIS, FRANCE.

SPEED-REGULATOR FOR EXPLOSlVE-ENGINES.

SPECIFICATIONforming part of Letters Patent No. 779,256, dated January 3, 1905.

Application filed September 21, 1903. Serial No. 174,122.

To @ZZ whom it may concern:

Be it known that I, ALFRED BoUGAUL'r, engineer, a citizen of the French Republic, residing at 2l Rue de Londres, Paris, France, have invented certain new and useful Improvements in Speed-Regulators for Explosive-Engines,.of which the following is a specification.

This invention relates to a speed-regulator for explosive-engines whereby the quantity of explosive mixture admitted to the cylinder can be varied according to the load on the engine, the proportions of the constituents of the explosive mixture having been previously determined. Y

In the arrangements in accordance with this invention the inlet is opened to its full extent at the beginning of the stroke and closed by a releasing-gear at a point of the stroke varying with the load on the engine. In this way the wiredrawing of the gaseous mixture and the disadvantages arising therefrom are avoided. The rapid closing of the admission is effected by a balanced member independent of the inlet-valve, which arrangement permits of the said'valve closing slowly onto its seat under the action of a spring of moderate strength, as the said spring has not to resist the depression caused by the action of the piston, the vacuum increasing as the load decreases.

In order that my invention may be clearly understood, I shall describe it with reference to the accompanying drawings, in which- Figure l is a sectional view of the device. Fig. 2 is a side elevation of an engine, showing the said device associated therewith; and Fig. 3 is an elevation of the parts represented in Fig. 2 looking toward the left in said Fig. 2.

The inlet-valve c for admitting the gaseous mixture into the cylinder is driven from a cam c on the valve-gear shaft '5, which by means of connecting-rods Z e operates a bent lever f, bearing on the lower end of the valvestem. The inlet-valve opens at the commencement of the suction-stroke and closes at the end of the same stroke, its movements being dependent upon those of the driving-piston.

A distributing-valve g, concentric with the inlet-valve c, moves in a space la, communicating with the engine-cylinder during the whole suction-stroke, as the inlet-valve is kept open during the whole of the said stroke. The said distributing-valve is provided with two rows of openings, one row, c', for the admission of the gas and another, j, for the admission of the air to form the explosive mixture. Between the said two rows of openings the distributing-valve is provided with baffles insuring-a perfect diffusion of the gas into the air. The said distributing-valve derives its motion from the inlet-valve a, controlling mechanism through the medium of a link m, attached to the tail of the aforesaid bent lever, and of a lever a, to which is pivoted a linger c, capable of engaging with the end of a rocker p, actuating' the distributing-valve.

The distributing-valve uncovers the ports at the commencement of the suction-stroke, the closing being effected by the releasing of the aforesaid linger 0, which is caused to turn on its pivot by a cam g, controlled by the govi ernor through the link v7' and causing at the proper period the tripping of a disengaging lever s, mounted on the pivot of the aforesaid finger 0. The momentum of the descent of the distributing-valve is absorbed by a spring dash-pot t. By this arrangement the distributing-valve is quickly closed, the point of the piston-stroke at which this occurs depending upon the load on the engine. The closing does not modify in any way the movement of the inlet-valve, which is besides unaffected by the action of the vacuum produced by the suction-stroke, as the medium in which it moves remains the same during the whole of the suction-stroke. The initial tension of the inlet-valve-closing spring need not, therethe valve mechanism hereinbeliore described, is represented as connected` by means of the passage /2/2, (see Figs. 2 and 3,) with one end of the cylinder c in order to convey the gaseous mixture into said cylinder. The pistonrod which extends from the cylinder is designated by c2 and is shown connected by a pitman or link c3 with the crank-arm c4 of the shaft c, connected by bevel-gearing, denoted in a general way by c, with the shaft The shaftb is Connected by bevel-gearing with the vertically-disposed shaft or spindle provided with a governor b2, adapted to operate the leverl Z13, connected by the link or rod 1 with the rockelever Z. The rock-lever br is fulcrumed between its ends, the link 1 being connected to one of said ends, while the link 7- is connected to the other end of said lever.

Having thus describcd'and ascertained the nature of my invention, I declare that what I claim isl. A speed-regulator for explosive-engines, having an inlet-valve, a mixing-chamber provided with ports for the entrance of gas and air in predetermined proportions, the discharge of the mixture from said chamber being caused by the opening of said inlet-valve, a distributing-valve arranged to simultaneously close said air and gas ports, mechanism for opening the two valves, the distributingvalve, when opened, serving to simultaneously uncover said ports, and governor-controlled means for causing the closure by said distributing-valve of said ports on each stroke of the engine, said distributing-valve being operable independently of the inlet-valve on its closing movement.

2. A speed-regulator for explosive-engines, having an inlet-valve, a mixing-chamber provalve, when opened, serving to simultaneously uncover said ports, a latch for holding the distributing-valve in a position to uncover said ports, and governor-controlled means for operating said latch to release the distributingvalve on each stroke of the engine, whereby the latter will be permitted to move to simultaneously close said ports independently of the inlet-valve.

3. A speed-regulator for explosive-engines, having an inlet-valve, a mixing-chamber having ports for the entrance of gas and air in predetermined proportions, the discharge of the mixture from said chamber being caused by the opening of said inlet-valve, a distributing-valve concentric with the inlet-valve and arranged when closed, to simultaneously cover said air and gas ports, mechanism for opening the two valves, the distributing-valve, when opened, serving' to simultaneously uncover said ports, and governor-controlled means for causing the closure of the distributing-valve at a point varying with the load on the engine on each stroke thereof, said distributing-valve being closable independently of the inlet-valve.

In testimony whereof I have hereunto set my hand in presence of two subscribing witnesses.

ALFRED BOUGAULT. Witnesses:

PAUL F. PQUET, Gr. L. LEINE. 

